COVER INFORMATION Station: VLBA_LA (Code La ) Experiment: Image 3C120 at 90cm - calibrator test Exp. Code: bw067p Schedule Version: 1.00 Processed by SCHED version: Release of 18 Sept. 2003 PI: Craig Walker Address: National Radio Astronomy Observatory P. O. Box O Socorro, New Mexico, 87801 U.S.A. Phone: 505 835 7247 EMAIL: cwalker@nrao.edu Fax: 505 835 7027 Phone during observation: 505 835 7247 Observing mode: 6cm 128-4-2 Notes: COVER LETTER: This project needs about 100 hours times 45 baselines to meet the sensitivity requirements. This time can be accumulated in many separated sessions. One session should be a full track with all antennas to set the calibration and ensure full uv coverage. I have submitted a schedule as bw067c for that session. The other sessions can involve as little as 2 hours and as few as 6 antennas. The observing frequency is 327 MHz. Tropospheric weather is not an issue - any conditions are ok. The ionosphere and the solar corona are potential problems. An outcome of the test observations (bw067a and bw067b) was that we should not observe near the sun. So please don't schedule this in the months of April through July. As per discussions with Dave Medcalf, I have set up this schedule to use a SCHED optimization mode that allows any subset of a full track to be designated by only changing the start time and the overall duration. So, with only modifications to those parameters, this schedule can be used repeatedly to build up the required baseline hours. See the "Initial Scan Information" section in the key file. The schedule uses 1.3 tape passes per hour. Here is the official dynamic scheduling sheet: ================================================================ Preferred Dynamic Contraints. Alter [defaults] as desired. ================================================================ Equipment constraints: Stations. Below each station code, the "o" indicates an [optional] station that is to be used if it is available. Change "o" to "r" if the station is required or change "o" to "n" if the station is not to be used. SC HN NL FD LA PT KP OV BR MK o o o o o o o o o r Minimum number of stations [6]: May we swap PT for a single VLA antenna? [yes] Consult http://www.aoc.nrao.edu/~gtaylor/y1gotcha.html to decide. If you adopt the default, then both PT and VLA1 must be in the stations list in the keyin file. Bands and polarizations. Below each band code, insert "R" if the righthand polarization is to be used, "L" if the lefthand polarization is to be used, "d" if dual polarizations are to be used, or "o" if the band is in your setups but scheduling should not be constrained by its availability. 90cm 50cm 20cm 13cm 6cm 4cm 2cm 1cm 7mm 3mm d Weather constraints: [appropriate for bands marked "L", "R", or "d" above and for at least the minimum number of stations] Date constraints: Preferred date(s), usually a series start [none]: Excluded dates plus reason [none]: April through July (too close to Sun). Preferred interval between segments in days [none]: Special conditions (e.g., a series with different spacings in time) [See the comments at the top.]: Schedule for VLBA_LA (Code La ) Page 2 Image 3C120 at 90cm - calibrator test UP: D => Below limits; H => Below horizon mask. blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Tapes: Drive, Index, Start footage / Direction, Head Group, End footage. TPStart: Tape motion start time. Frequencies are LO sum (band edge). Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Sat 27 Dec 2003 Day 361 --- Next scan frequencies: 324.49 324.49 332.49 332.49 Next BBC frequencies: 824.49 824.49 832.49 832.49 Next scan bandwidths: 8.00 8.00 8.00 8.00 23 48 17 3C147 23 07 30 21.5 43.2 -6.6 -59.5 0 1 1 0 23 47 57 23 51 17 --- 23 10 30 21.9 43.5 -6.5 -60.0 180 F 1 1330 --- Sun 28 Dec 2003 Day 362 --- 00 13 27 J0423-0120 23 32 44 13.2 101.4 -4.8 -52.7 1286 1 1 1330 00 13 07 00 16 27 =0420-014 23 35 44 13.8 101.9 -4.8 -52.6 180 F 1 2660 00 16 41 3C120 23 35 58 15.8 94.8 -5.0 -54.3 4 1 1 2660 00 16 27 00 36 38 --- 23 55 58 19.8 97.9 -4.6 -53.8 1197 F 1 10733 00 36 53 J0423-0120 23 56 13 17.8 105.2 -4.5 -51.6 4 1 1 10733 00 36 38 00 39 52 =0420-014 23 59 13 18.4 105.7 -4.4 -51.4 180 F 1 12031 00 40 08 3C120 23 59 29 20.5 98.5 -4.6 -53.7 4 1 2 12031 00 39 52 01 00 04 --- 00 19 29 24.5 101.7 -4.2 -52.9 1197 R 1 15089 01 01 05 3C147 00 20 30 32.2 48.7 -5.4 -71.0 20 1 2 15089 01 00 45 01 04 05 --- 00 23 30 32.6 48.9 -5.3 -71.5 180 R 1 13759 01 06 04 3C120 00 25 30 25.7 102.7 -4.1 -52.7 78 1 2 13759 01 05 44 01 26 01 --- 00 45 30 29.7 106.1 -3.8 -51.5 1197 R 1 5647 01 26 19 J0423-0120 00 45 48 27.3 113.8 -3.6 -47.9 7 1 2 5647 01 26 01 01 29 18 =0420-014 00 48 48 27.8 114.4 -3.6 -47.7 180 R 1 4332 01 29 36 3C120 00 49 05 30.4 106.8 -3.7 -51.3 7 1 3 4332 01 29 18 01 49 33 --- 01 09 05 34.2 110.5 -3.4 -49.7 1197 F 1 3763 01 49 50 J0423-0120 01 09 23 31.6 118.5 -3.2 -45.5 6 1 3 3763 01 49 33 01 52 50 =0420-014 01 12 23 32.1 119.1 -3.2 -45.2 180 F 1 5078 01 53 07 3C120 01 12 41 34.9 111.2 -3.3 -49.4 6 1 3 5078 01 52 50 02 13 04 --- 01 32 41 38.6 115.3 -3.0 -47.4 1197 F 1 13173 02 14 45 3C147 01 34 21 43.7 52.1 -4.1 -83.1 52 1 3 13173 02 14 25 02 17 44 --- 01 37 21 44.2 52.2 -4.1 -83.6 180 F 1 14503 Schedule for VLBA_LA (Code La ) Page 3 Image 3C120 at 90cm - calibrator test UP: D => Below limits; H => Below horizon mask. blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Tapes: Drive, Index, Start footage / Direction, Head Group, End footage. TPStart: Tape motion start time. Frequencies are LO sum (band edge). Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Sun 28 Dec 2003 Day 362 --- 02 19 44 3C120 01 39 21 39.8 116.8 -2.9 -46.7 71 1 4 14503 02 19 24 02 39 40 --- 01 59 21 43.4 121.5 -2.6 -44.0 1197 R 1 12585 02 40 01 J0423-0120 01 59 41 40.0 130.0 -2.4 -38.5 8 1 4 12585 02 39 40 02 43 00 =0420-014 02 02 41 40.5 130.7 -2.3 -37.9 180 R 1 11253 02 43 20 3C120 02 03 02 44.0 122.4 -2.5 -43.5 7 1 4 11253 02 43 00 03 03 17 --- 02 23 02 47.3 127.7 -2.2 -40.1 1197 R 1 3141 03 03 37 J0423-0120 02 23 22 43.5 136.4 -2.0 -34.0 6 1 4 3141 03 03 17 03 06 37 =0420-014 02 26 22 43.9 137.2 -2.0 -33.4 180 R 1 1810 03 06 56 3C120 02 26 42 47.9 128.7 -2.1 -39.5 6 1 5 1810 03 06 37 03 26 53 --- 02 46 42 50.9 134.8 -1.8 -35.3 1197 F 1 6300 03 28 41 3C147 02 48 30 55.7 52.0 -2.9 -97.3 47 1 5 6300 03 28 21 03 31 40 --- 02 51 30 56.1 51.9 -2.9 -98.0 180 F 1 7630 03 33 40 3C120 02 53 30 51.9 137.1 -1.7 -33.7 57 1 5 7630 03 33 20 03 53 37 --- 03 13 30 54.5 144.2 -1.3 -28.5 1197 F 1 15741 03 53 57 J0423-0120 03 13 50 49.5 152.6 -1.2 -21.9 4 1 5 15741 03 53 37 03 56 57 =0420-014 03 16 50 49.8 153.7 -1.1 -21.1 180 F 1 17073 03 57 17 3C120 03 17 10 54.9 145.6 -1.3 -27.4 4 1 6 17073 03 56 57 04 17 14 --- 03 37 10 57.0 153.7 -0.9 -21.2 1197 R 1 10014 04 17 34 J0423-0120 03 37 31 51.4 161.4 -0.8 -15.0 3 1 6 10014 04 17 14 04 20 33 =0420-014 03 40 31 51.6 162.6 -0.7 -14.1 180 R 1 8681 04 20 54 3C120 03 40 51 57.3 155.3 -0.9 -19.9 3 1 6 8681 04 20 33 04 40 50 --- 04 00 51 58.7 164.3 -0.5 -12.8 1197 R 1 569 04 42 38 3C147 04 02 39 67.0 44.4 -1.7 -118.3 22 1 7 569 04 42 18 04 45 38 --- 04 05 39 67.4 43.8 -1.6 -119.4 180 F 1 761 04 47 37 3C120 04 07 39 59.0 167.5 -0.4 -10.2 31 1 7 761 04 47 17 05 07 34 --- 04 27 39 59.6 177.2 -0.1 -2.3 1197 F 1 8873 05 07 54 J0423-0120 04 27 59 52.9 181.9 0.1 1.5 1 1 7 8873 05 07 34 05 10 54 =0420-014 04 30 59 52.9 183.1 0.1 2.5 180 F 1 10205 Schedule for VLBA_LA (Code La ) Page 4 Image 3C120 at 90cm - calibrator test UP: D => Below limits; H => Below horizon mask. blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Tapes: Drive, Index, Start footage / Direction, Head Group, End footage. TPStart: Tape motion start time. Frequencies are LO sum (band edge). Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Sun 28 Dec 2003 Day 362 --- 05 11 14 3C120 04 31 20 59.6 179.0 0.0 -0.8 1 1 8 10205 05 10 54 05 31 11 --- 04 51 20 59.3 188.8 0.3 7.1 1197 R 1 16882 05 31 31 J0423-0120 04 51 40 52.3 191.6 0.5 9.4 0 1 8 16882 05 31 11 05 34 31 =0420-014 04 54 40 52.2 192.8 0.5 10.3 180 R 1 15550 05 34 51 3C120 04 55 00 59.2 190.5 0.4 8.6 0 1 8 15550 05 34 31 05 54 48 --- 05 15 00 58.1 199.9 0.7 16.1 1197 R 1 7437 05 56 52 3C147 05 17 05 75.2 376.4 -0.4 -159.1 1 1 8 7437 05 56 32 05 59 52 --- 05 20 05 75.3 374.7 -0.4 -161.4 180 R 1 6107 06 02 00 3C120 05 22 14 57.6 203.1 0.8 18.7 8 1 9 6107 06 01 40 06 21 57 --- 05 42 14 55.7 211.5 1.1 25.2 1197 F 1 2005 06 22 17 J0423-0120 05 42 34 48.6 210.7 1.3 24.5 0 1 9 2005 06 21 57 06 25 17 =0420-014 05 45 34 48.2 211.8 1.4 25.3 180 F 1 3337 06 25 37 3C120 05 45 55 55.3 213.0 1.2 26.3 0 1 9 3337 06 25 17 06 45 33 --- 06 05 55 52.9 220.4 1.5 31.9 1197 F 1 11450 06 45 54 J0423-0120 06 06 15 45.8 218.5 1.7 30.3 0 1 9 11450 06 45 33 06 48 53 =0420-014 06 09 15 45.4 219.4 1.8 31.0 180 F 1 12782 06 49 14 3C120 06 09 35 52.4 221.7 1.6 32.8 0 1 10 12782 06 48 53 07 09 10 --- 06 29 35 49.5 228.1 1.9 37.4 1197 R 1 14305 07 11 14 3C147 06 31 40 73.4 331.6 0.8 143.3 49 1 10 14305 07 10 54 07 14 14 --- 06 34 40 73.1 330.3 0.9 141.4 180 R 1 12975 07 16 29 3C120 06 36 55 48.4 230.3 2.1 38.9 63 1 10 12975 07 16 09 07 36 26 --- 06 56 55 45.2 235.9 2.4 42.4 1197 R 1 4864 07 36 46 J0423-0120 06 57 16 38.4 232.5 2.6 40.1 1 1 10 4864 07 36 26 07 39 46 =0420-014 07 00 16 38.0 233.2 2.6 40.6 180 R 1 3531 07 40 06 3C120 07 00 36 44.5 236.8 2.5 43.0 1 1 11 3531 07 39 46 08 00 03 --- 07 20 36 41.1 241.6 2.8 45.8 1197 F 1 4582 08 00 23 J0423-0120 07 20 56 34.5 238.0 3.0 43.5 1 1 11 4582 08 00 03 08 03 22 =0420-014 07 23 56 34.0 238.7 3.0 43.9 180 F 1 5914 Schedule for VLBA_LA (Code La ) Page 5 Image 3C120 at 90cm - calibrator test UP: D => Below limits; H => Below horizon mask. blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Tapes: Drive, Index, Start footage / Direction, Head Group, End footage. TPStart: Tape motion start time. Frequencies are LO sum (band edge). Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Sun 28 Dec 2003 Day 362 --- 08 03 43 3C120 07 24 17 40.4 242.5 2.8 46.3 1 1 11 5914 08 03 22 08 23 39 --- 07 44 17 36.7 246.8 3.2 48.5 1197 F 1 14026 08 25 27 3C147 07 46 04 63.7 311.9 2.1 110.6 48 1 11 14026 08 25 07 08 28 26 --- 07 49 04 63.2 311.6 2.1 109.7 180 F 1 15356 08 30 54 3C286 07 51 33 21.0 426.8 -5.7 -60.0 57 1 11 15356 08 30 34 08 33 54 --- 07 54 33 21.6 427.2 -5.6 -60.2 180 F 1 16686 08 36 10 3C120 07 56 49 34.4 249.3 3.4 49.7 11 1 12 16686 08 35 50 08 56 06 --- 08 16 49 30.5 253.1 3.7 51.2 1197 R 1 10402 08 56 27 J0423-0120 08 17 09 24.3 249.1 3.9 49.3 2 1 12 10402 08 56 06 08 59 26 =0420-014 08 20 09 23.7 249.7 3.9 49.5 180 R 1 9070 08 59 46 3C120 08 20 29 29.8 253.7 3.8 51.5 2 1 12 9070 08 59 26 09 19 43 --- 08 40 29 25.9 257.2 4.1 52.6 1197 R 1 957 09 20 03 J0423-0120 08 40 49 19.7 253.2 4.3 51.0 2 1 13 957 09 19 43 09 23 02 =0420-014 08 43 49 19.2 253.7 4.3 51.2 180 F 1 372 09 23 22 3C120 08 44 09 25.2 257.8 4.2 52.8 2 1 13 372 09 23 02 09 43 19 --- 09 04 09 21.2 261.0 4.5 53.6 1197 F 1 8482 09 44 48 3C147 09 05 38 51.1 307.4 3.4 91.5 23 1 13 8482 09 44 28 09 47 47 --- 09 08 38 50.6 307.4 3.4 90.9 180 F 1 9812 09 49 38 3C286 09 10 30 36.1 435.6 -4.3 -65.8 19 1 13 9812 09 49 18 09 52 38 --- 09 13 30 36.7 436.0 -4.3 -66.0 180 F 1 11142 09 54 49 3C120 09 15 42 18.9 262.9 4.7 54.0 10 1 14 11142 09 54 29 10 14 46 --- 09 35 42 14.8 265.9 5.0 54.4 1197 R 1 15947 10 39 44 3C147 10 00 44 42.3 308.2 4.3 81.5 1438 1 14 15947 10 39 24 10 42 44 --- 10 03 44 41.8 308.3 4.3 81.0 180 R 1 14617 10 45 09 3C286 10 06 10 47.2 441.8 -3.4 -68.7 50 1 14 14617 10 44 49 10 48 09 --- 10 09 10 47.8 442.2 -3.4 -68.9 180 R 1 13287 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: bw051.set Matches group v5090n in /home/filehost/cwalker/sched/catalogs/freq.dat Setup group: 1 Station: VLBA Total bit rate: 128 Format: VLBA1:4 Bits per sample: 2 Sample rate: 16.000 Number of channels: 4 Passes/head pos: 1 Speedup factor: 2.00 Tape speeds: Low density - 133.330 ips, High density - 80.00 ips Time per pass for 17600 ft, High density tapes is: 00:44:00 1st LO= -500.00 -500.00 -500.00 -500.00 Net SB= U U U U Pol. = RCP LCP RCP LCP BBC = 1 2 3 4 BBC SB= U U U U IF = B D B D VLBA FE= omit 90cm omit 90cm VLBA Synth= 15.4 15.4 15.4 The following frequency sets based on this setup were used. Frequency Set: 1 Setup file default. Used pcal sets: 1 LO sum= 324.49 324.49 332.49 332.49 BBC fr= 824.49 824.49 832.49 832.49 Bandwd= 8.000 8.000 8.000 8.000 The following pulse cal sets were used with this setup: Pulse cal detection set: 1 PCAL = OFF PCALXB1= S1 S2 S3 S4 OFF OFF OFF OFF PCALXB2= M1 M2 M3 M4 OFF OFF OFF OFF PCALFR1= 0 0 0 0 0 0 0 0 PCALFR2= 0 0 0 0 0 0 0 0 Track assignments are: track1= 2, 18, 3, 19 barrel=roll_auto SOURCE LIST -- Image 3C120 at 90cm - calibrator test Catalog positions marked with *. Precession of date coordinates is based on stop time of first scan. Names used in schedule marked with *. Short names used in VLA and SNAP files marked with +. Observation date used in B1950/J2000 coordinate conversion (PRECDATE): 1979.900 No adjustments are made for rates (DRA, DDEC). Source Source position (RA/Dec) (B1950) (J2000) (Date) * J0423-0120 04 20 43.539850 * 04 23 15.800727 04 23 28.433607 0420-014 -01 27 28.70002 *-01 20 33.06531 -01 19 58.21328 J0423-01 /home/filehost/cwalker/sched/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report J0433+0521 04 30 31.602066 * 04 33 11.095535 04 33 24.288816 0430+052 05 14 59.61664 * 05 21 15.61942 05 21 48.69795 * 3C120 /home/filehost/cwalker/sched/catalogs/sources.vlba J0433+05 ICRF - Ext.1 Source - 1998 IERS Annual Report J0542+4951 05 38 43.517539 * 05 42 36.137917 05 42 55.678126 0538+498 49 49 42.83693 * 49 51 07.23356 49 51 20.68520 * 3C147 /home/filehost/cwalker/sched/catalogs/sources.vlba J0542+49 ICRF - Ext.1 Source - 1998 IERS Annual Report J1331+3030 13 28 49.657691 * 13 31 08.287984 13 31 18.396963 1328+307 30 45 58.64021 * 30 30 32.95885 30 29 10.65850 * 3C286 /home/filehost/cwalker/sched/catalogs/sources.vlba J1331+30 VLBA Calib. Survey - ICRF Frame - reduced by GSFC group - Aug 2001 The solar corona can cause unstable phases for sources too close to the Sun. SCHED provides warnings at individual scans for distances less than 10 degrees. The distance from the Sun to each source in this schedule is: Source Sun distance (deg) J0423-0120 141.3 3C120 147.4 3C147 152.1 3C286 88.8 Barry Clark estimates from predictions by Ketan Desai of IPM scattering sizes that the Sun will cause amplitude reductions on the longest VLBA baselines at a solar distance of 60deg F^(-0.6) where F is in GHz. For common VLBI bands, this is: 327 MHz 117. deg 610 MHz 81. deg 1.6 GHz 45. deg 2.3 GHz 36. deg 5.0 GHz 23. deg 8.4 GHz 17. deg 15.0 GHz 12. deg 22.0 GHz 9. deg 43.0 GHz 6. deg